Is this happening to anyone else? I'm on the latest version as of this post.

I loaded the new version and it's spamming the chat that zombies have been spawned, but also none are showing up.

they don't spawn for me as well. reverting to a previous version fixed it

I'm not getting any zombie spawns with the following config: 

{
  "Spawn Settings": {
    "Spawn near players": true,
    "Min pop for near player spawn": 1,
    "Min distance from player": 40.0,
    "Max distance from player": 80.0,
    "Spawn Time": 19.8,
    "Destroy Time": 7.3,
    "Zombie Settings": {
      "Scarecrow Population (total amount)": 10,
      "Scarecrow Health": 200.0,
      "Scarecrow Kits": []
    },
    "Chance Settings": {
      "Chance per cycle": 100.0,
      "Days betewen spawn": 0
    }
  },
  "Destroy Settings": {
    "Leave Corpse, when destroyed": false,
    "Leave Corpse, when killed by player": true,
    "Half bodybag despawn time": true,
    "Quick destroy corpses": true
  },
  "Behaviour Settings": {
    "Attack sleeping players": false,
    "Zombies attacked by outpost sentries": false,
    "Ignore Human NPCs": true,
    "Ignored entities (full entity shortname)": [
      "scientistjunkpile.prefab",
      "scarecrow.prefab"
    ]
  },
  "Broadcast Settings": {
    "Broadcast spawn amount": false
  }
}

Just pushed an update, let me know if this issue still persists.

Spawn works fine, but intelligence remains the same.